| 贵州威宁昊星铅锌矿地球化学特征及成因浅析 |
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| 引用本文： | 王佳武,洪万华,张仁彪,郑超,刘健,谢小峰,左勇,尹森林,肖俊岩,闫斌.贵州威宁昊星铅锌矿地球化学特征及成因浅析[J].贵州地质,2019,36(4):342-351. |
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| 作者姓名： | 王佳武 洪万华 张仁彪 郑超 刘健 谢小峰 左勇 尹森林 肖俊岩 闫斌 |
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| 作者单位： | 贵州省地质矿产勘查开发局103地质大队,贵州 铜仁,554300;贵州省地质矿产勘查开发局117地质大队,贵州 贵阳,550000;保利国防科技研究中心有限公司,北京,100088;中国地质科学院地质研究所,北京,100037 |
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| 基金项目： | 贵州省地质矿产勘查开发局重大科研专项(黔西北地区铅锌找矿攻关)资助，编号:黔地矿纪要(2015)14号。 |
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| 摘 要： | 昊星铅锌矿床位于黔西北威宁县境内的云炉河坝地区,毗邻川滇黔接壤铅锌矿集区内第二大的毛坪铅锌矿床。该矿床赋存于泥盆系碳酸盐岩中,矿体呈似层状、透镜状及脉状产出,与赋矿地层产状基本一致,受NE向构造控矿明显。硫化物矿石的Pb品位为1. 5%42. 80%,平均2. 89%,Zn品位为1. 5%35. 92%,平均9. 86%。可见,昊星铅锌矿床的成矿特征与会泽、毛坪和天桥等川滇黔铅锌矿集区内的其他典型矿床较相似。昊星铅锌矿床硫化物(黄铁矿、闪锌矿和方铅矿)的δ34SCDT值介于-57. 21‰+3. 93‰,则明显不同于会泽、毛坪和天桥等矿床(5‰%25‰),暗示昊星铅锌矿床的还原硫可能具有不同的来源或形成机制。通过分析认为,该矿床的硫很可能是海相硫酸盐生物还原过程(BSR)的产物,而黄铁矿异常低的δ34S可能是非封闭体系BSR批式分离的结果,即BSR过程形成的还原硫分批随着流体迁移至异地参与成矿。方铅矿的Pb同位素组成显示,昊星铅锌矿床的成矿金属主要由基底岩石提供。因此,本文认为昊星铅锌矿床是流体混合的产物,起源或流经基底岩石的成矿流体与BSR过程形成的还原性流体在异地发生混合,伴生部分TSR和水/岩相互作用过程,赋矿沉积岩中的蒸发岩和金属元素参与到了成矿之中,最终形成昊星铅锌矿床。
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| 关 键 词： | 硫同位素 铅同位素 成矿物质 昊星铅锌矿 黔西北铅锌矿成矿区 |
| 收稿时间： | 2019/6/6 0:00:00 |
Geochemical Characteristics and Preliminary Genesis Analysis of the Haoxing Lead-zinc Deposit in Weining, Guizhou |
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| AN Zheng-ze,WANG Jian-wu,HONG Wan-Huan,ZHANG Ren-biao,ZHENG Chao,LIU Jian,XIE Xiao-feng,ZUO Yong,YIN Sen-lin,XIAO Jun-yan and YAN Bin.Geochemical Characteristics and Preliminary Genesis Analysis of the Haoxing Lead-zinc Deposit in Weining, Guizhou[J].Guizhou Geology,2019,36(4):342-351. |
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| Authors: | AN Zheng-ze WANG Jian-wu HONG Wan-Huan ZHANG Ren-biao ZHENG Chao LIU Jian XIE Xiao-feng ZUO Yong YIN Sen-lin XIAO Jun-yan and YAN Bin |
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| Institution: | 103 Geological Party, Guizhou Bureau of Geology & Mineral Exploration and Development, Tongren 554300, Guizhou, China,103 Geological Party, Guizhou Bureau of Geology & Mineral Exploration and Development, Tongren 554300, Guizhou, China,103 Geological Party, Guizhou Bureau of Geology & Mineral Exploration and Development, Tongren 554300, Guizhou, China,103 Geological Party, Guizhou Bureau of Geology & Mineral Exploration and Development, Tongren 554300, Guizhou, China,103 Geological Party, Guizhou Bureau of Geology & Mineral Exploration and Development, Tongren 554300, Guizhou, China,103 Geological Party, Guizhou Bureau of Geology & Mineral Exploration and Development, Tongren 554300, Guizhou, China,103 Geological Party, Guizhou Bureau of Geology & Mineral Exploration and Development, Tongren 554300, Guizhou, China,103 Geological Party, Guizhou Bureau of Geology & Mineral Exploration and Development, Tongren 554300, Guizhou, China,117 Geological Party, Guizhou Bureau of Geology & Mineral Exploration and Development, Guiyang 550000, Guizhou, China,Poly Defence Research Center Co.Ltd, Beijing 100088, China and Institute of geology, Chinese Academy of Geological Sciences, Beijing 100037, China |
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| Abstract: | |
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| Keywords: | S isotope Pb isotope Ore-forming material Haoxing Lead-zinc deposit Lead-zinc metallogenic region of northwest Guizhou |
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